Abstract

In this paper, we have fabricated two-dimensional (2-D) photonic crystals (PhCs) in order to obtain the high light extraction efficiency of InGaN-based Light Emitting Diodes (LEDs) and then we used front-side illuminated micro-photoluminescence (μ-PL) spectroscopy to measure the PL intensity of our InGaN-based LEDs, we also used back-side illuminated inverted microscopy to double check our PL intensity results. From the PL intensity results, not only a nearly threefold increase in the PL intensity was observed, but also that the light output intensity has the air duty cycle dependent characteristic was demonstrated.

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